mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-18 10:21:01 +03:00
df72b8bebe
The range_tree_verify function looks for a segment in a range tree and panics if the segment is present on the tree. This patch gives the function a more descriptive name. Reviewed-by: Matt Ahrens <mahrens@delphix.com> Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Serapheim Dimitropoulos <serapheim@delphix.com> Closes #8327
127 lines
4.5 KiB
C
127 lines
4.5 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or http://www.opensolaris.org/os/licensing.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
/*
|
|
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
|
|
* Use is subject to license terms.
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2013, 2017 by Delphix. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _SYS_RANGE_TREE_H
|
|
#define _SYS_RANGE_TREE_H
|
|
|
|
#include <sys/avl.h>
|
|
#include <sys/dmu.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define RANGE_TREE_HISTOGRAM_SIZE 64
|
|
|
|
typedef struct range_tree_ops range_tree_ops_t;
|
|
|
|
/*
|
|
* Note: the range_tree may not be accessed concurrently; consumers
|
|
* must provide external locking if required.
|
|
*/
|
|
typedef struct range_tree {
|
|
avl_tree_t rt_root; /* offset-ordered segment AVL tree */
|
|
uint64_t rt_space; /* sum of all segments in the map */
|
|
uint64_t rt_gap; /* allowable inter-segment gap */
|
|
range_tree_ops_t *rt_ops;
|
|
|
|
/* rt_avl_compare should only be set if rt_arg is an AVL tree */
|
|
void *rt_arg;
|
|
int (*rt_avl_compare)(const void *, const void *);
|
|
|
|
|
|
/*
|
|
* The rt_histogram maintains a histogram of ranges. Each bucket,
|
|
* rt_histogram[i], contains the number of ranges whose size is:
|
|
* 2^i <= size of range in bytes < 2^(i+1)
|
|
*/
|
|
uint64_t rt_histogram[RANGE_TREE_HISTOGRAM_SIZE];
|
|
} range_tree_t;
|
|
|
|
typedef struct range_seg {
|
|
avl_node_t rs_node; /* AVL node */
|
|
avl_node_t rs_pp_node; /* AVL picker-private node */
|
|
uint64_t rs_start; /* starting offset of this segment */
|
|
uint64_t rs_end; /* ending offset (non-inclusive) */
|
|
uint64_t rs_fill; /* actual fill if gap mode is on */
|
|
} range_seg_t;
|
|
|
|
struct range_tree_ops {
|
|
void (*rtop_create)(range_tree_t *rt, void *arg);
|
|
void (*rtop_destroy)(range_tree_t *rt, void *arg);
|
|
void (*rtop_add)(range_tree_t *rt, range_seg_t *rs, void *arg);
|
|
void (*rtop_remove)(range_tree_t *rt, range_seg_t *rs, void *arg);
|
|
void (*rtop_vacate)(range_tree_t *rt, void *arg);
|
|
};
|
|
|
|
typedef void range_tree_func_t(void *arg, uint64_t start, uint64_t size);
|
|
|
|
void range_tree_init(void);
|
|
void range_tree_fini(void);
|
|
range_tree_t *range_tree_create_impl(range_tree_ops_t *ops, void *arg,
|
|
int (*avl_compare) (const void *, const void *), uint64_t gap);
|
|
range_tree_t *range_tree_create(range_tree_ops_t *ops, void *arg);
|
|
void range_tree_destroy(range_tree_t *rt);
|
|
boolean_t range_tree_contains(range_tree_t *rt, uint64_t start, uint64_t size);
|
|
void range_tree_verify_not_present(range_tree_t *rt,
|
|
uint64_t start, uint64_t size);
|
|
range_seg_t *range_tree_find(range_tree_t *rt, uint64_t start, uint64_t size);
|
|
void range_tree_resize_segment(range_tree_t *rt, range_seg_t *rs,
|
|
uint64_t newstart, uint64_t newsize);
|
|
uint64_t range_tree_space(range_tree_t *rt);
|
|
boolean_t range_tree_is_empty(range_tree_t *rt);
|
|
void range_tree_swap(range_tree_t **rtsrc, range_tree_t **rtdst);
|
|
void range_tree_stat_verify(range_tree_t *rt);
|
|
uint64_t range_tree_min(range_tree_t *rt);
|
|
uint64_t range_tree_max(range_tree_t *rt);
|
|
uint64_t range_tree_span(range_tree_t *rt);
|
|
|
|
void range_tree_add(void *arg, uint64_t start, uint64_t size);
|
|
void range_tree_remove(void *arg, uint64_t start, uint64_t size);
|
|
void range_tree_remove_fill(range_tree_t *rt, uint64_t start, uint64_t size);
|
|
void range_tree_adjust_fill(range_tree_t *rt, range_seg_t *rs, int64_t delta);
|
|
void range_tree_clear(range_tree_t *rt, uint64_t start, uint64_t size);
|
|
|
|
void range_tree_vacate(range_tree_t *rt, range_tree_func_t *func, void *arg);
|
|
void range_tree_walk(range_tree_t *rt, range_tree_func_t *func, void *arg);
|
|
range_seg_t *range_tree_first(range_tree_t *rt);
|
|
|
|
void rt_avl_create(range_tree_t *rt, void *arg);
|
|
void rt_avl_destroy(range_tree_t *rt, void *arg);
|
|
void rt_avl_add(range_tree_t *rt, range_seg_t *rs, void *arg);
|
|
void rt_avl_remove(range_tree_t *rt, range_seg_t *rs, void *arg);
|
|
void rt_avl_vacate(range_tree_t *rt, void *arg);
|
|
extern struct range_tree_ops rt_avl_ops;
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_RANGE_TREE_H */
|